JPS59102295A - Sound adjusting wall - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to walls in rooms such as theaters and music performance halls where acoustic effects are particularly important.

Conventionally, such indoor walls are usually fixed so that they do not move, and the acoustic effects produced by the wall surfaces are constant. Therefore, in the room, depending on the type and shape of the outer surface material on the front side of the wall member and the sound absorbing material inserted on the back side, for example, it may be possible to obtain only an acoustic effect suitable for theater, or a sound effect suitable for music/1ilf performance. The reality is that only half-baked acoustic results are obtained for both theater and performance.

In view of these circumstances, the present invention was developed by Otokei! The purpose is to provide a wall that can have various effects.

In order to achieve this objective, the present invention provides an acoustic control chamber with an open front surface between a pair of left and right pillars, covers the opening of the acoustic control chamber with a wall member, and this wall member covers four
A front side external plate is installed on the front side of both side frames, and a back side external plate consisting of a perforated plate is installed on the rear side, and a sound absorbing material is filled between both valve side plates, so that the left and right bone frames face each other. The device is characterized in that a rotation center shaft is provided on a pair of opposite side portions and projects outward in the opposing direction, and the rotation center shaft is rotatably supported on the sound control chamber.

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a front view of the wall surface, and FIG. 2 is a sectional view taken along the line II--II.

For this wall surface, an acoustic control room 2 with an open wall surface side is installed between pillars 1 that are erected at appropriate intervals, and the sound is controlled by arranging the open surfaces of the control room 2 in multiple stages vertically. covered with a wall member 3.

FIG. 3 is a perspective view of the wall member 3, and FIG. 4 is a longitudinal sectional side view thereof.

These wall members 3 have four side parts 4a, 4b, top, bottom, left and right,
4c, 4d, a reinforcing frame 4e that connects the vertical center portions of the pair of left and right opposite side portions 4a, 4b, and a connecting frame 4f that connects the middle portions of the upper and lower phantom opposite side portions 4c, 4d.
The bone frame 4 has a front side outer plate 5 made of a thin metal plate such as aluminum on the front side, and a back side outer plate 6 made of a thin metal plate made of aluminum or the like on the rear side. It is stretched.

There are two layers of sound absorbing material 7a on the front and back between the valve face plates 5 and 6.
・Fill with 7b. Here, the sound absorbing material 7a on the surface layer is made of foamed urethane to provide a heat insulating effect on the wall surface, and the sound absorbing material 7b on the back layer is made of glass wool, but the material of the sound absorbing material is not limited to these, and the sound absorbing material is not necessarily used. It does not need to be two layers, and may be a single layer or three or more layers.

A rotation center shaft 8 protruding outward in the opposite direction is provided at the center in the vertical direction of the pair of left and right opposite side portions 4a and 4b of the bone frame 4, and this rotation center shaft 8 is rotatably pivoted to the pillars 1 on both sides. By supporting the wall member 3, it is possible to swing the wall member 3 from a vertical position to a horizontal position at the same angle over an angular range of 90°.

Furthermore, a packing material 9 is provided along the upper edge of the upper side portion 4c of the upper and lower opposite side portions 4c and 4d of the frame 4, and when the wall member 3 is placed vertically (solid line diagram in Fig. 2), , the space between vertically adjacent wall members 3 is sealed.

When the wall member 3 is placed vertically, the opening of the acoustic control room 2 is completely blocked by the wall member 3, and all the sounds in the room are reflected toward the room by the front outer panel 5. When the room is tilted, only a part of the sound inside the room is reflected towards the inside of the room, and the other part enters the sound control room 2.

Since the sound-absorbing material 10 is pasted on the inner wall of the acoustic control room 2, most of the sound that enters here is absorbed by the sound-absorbing material 10, and some of the sound reflected from the surface of the sound-absorbing material 10 is further absorbed. The sound propagates into the wall member 3 through the hole 11 in the back side outer plate 6 of the wall member 3, and is absorbed by the sound absorbers 4t7a and 7b. Wall member 3
The sound reflected by the back side outer panel 6 is attenuated by the interference of sound from inside the room, and is directed toward the sound absorbing material 10 of the acoustic control room 2. In this way, the sound that enters the sound control room 2 is rapidly absorbed, attenuated, and disappears.

The silencing effect of the acoustic control room 2 changes depending on the degree of opening of the wall member 3, and as a result, the sound in the room'JI9)J
The results can be changed in various ways.

As explained above, in the present invention, the front outer panel acts as a reflective surface that reflects sound, and the back outer panel and the sound-absorbing material inside the wall member act as a muffling wall member, which can be rotated into an acoustic m-section room. It is possible to change the reflection rate of sound into the room and the absorption rate of indoor sound depending on the direction of the wall member 3, and it is possible to change the effect on sound in various ways with one wall surface.

In addition, the wall members have a quadrilateral frame, so they have great strength (even relatively long ones are difficult to bend or distort under their own weight), and accurate acoustic effect adjustment over a long period of time. It can be performed.

Furthermore, especially when the sound absorbing material is attached to the inner surface of the sound control room, the range of sound control becomes larger, allowing the user to experience a richer sound world.

[Brief explanation of the drawing]

FIG. 1 is a front view of the wall surface, FIG. 2 is a vertical sectional view taken along the line II-H, FIG. 3 is a perspective view of the wall portion 4A3, and FIG. 4 is a vertical sectional side view thereof.

Claims (1)

[Claims] (11) An acoustic control chamber with an open front side is provided between a pair of left and right pillar members, and the opening of the acoustic control chamber is covered with a wall member, and the wall member has a quadrilateral shape on the top, bottom, left and right sides. A front side external plate is installed on the front side of the narrow frame, and a back side external plate made of a perforated plate is installed on the rear side, and a sound absorbing material is filled between both valve side plates. (2) The inner surface of the acoustic control chamber, characterized in that a rotation center shaft is provided on the opposite side of the wall and projects outward in the opposite direction, and the rotation center axis is rotatably supported on the sound control chamber. The acoustic control wall according to claim 1, in which a sound absorbing material (=J) is attached to the